Competitive States in Natural Middle-aged Forest of Mongolian Oak at Jincang Forest Farm

SHEN Chen-chen; LEI Xiang-dong; WANG Fu-you; MA Wu; SHEN Jian-bo

Tree competition states were examined in two 50 m × 50 m plots of natural middle-aged forests of Mongolian oak, which are located at Jincang Forest Farm, Wangqing Forestry Bureau, Jilin Province. Eight competition indices were selected to show the states of inter-and intra-species competition. The analysis results indicated that the trees competed strongly in both aspects of intra-species and inter-species, especially for Mongolian oak. White birch and black birch, the strongest competitive species for Mongolian oak, were also the most competitive species in the forest. But the competitiveness of Mongolian oak was at the middle level among the species. The results of the indices differed from each other due to they reflected the competition from different aspects. The competition intensity of Mongolian oak decreased as the diameter of the individual tree increased, and the relationship can be reasonably depicted by power function.

1. Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China

2. Wangqing Forestry Bureau, Jilin Province, Wangqing 133400, Jilin, China

Received Date: 2011-09-20

Available Online: 2012-06-13

Abstract: Tree competition states were examined in two 50 m × 50 m plots of natural middle-aged forests of Mongolian oak, which are located at Jincang Forest Farm, Wangqing Forestry Bureau, Jilin Province. Eight competition indices were selected to show the states of inter-and intra-species competition. The analysis results indicated that the trees competed strongly in both aspects of intra-species and inter-species, especially for Mongolian oak. White birch and black birch, the strongest competitive species for Mongolian oak, were also the most competitive species in the forest. But the competitiveness of Mongolian oak was at the middle level among the species. The results of the indices differed from each other due to they reflected the competition from different aspects. The competition intensity of Mongolian oak decreased as the diameter of the individual tree increased, and the relationship can be reasonably depicted by power function.

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Reference (23)

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Competitive States in Natural Middle-aged Forest of Mongolian Oak at Jincang Forest Farm

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通讯作者: 陈斌, bchen63@163.com

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